Its been awhile since I posted, but I am officially out of ideas for my 2006 BMW X5 3.0i with 224k. Currently, its make a weird rapid ratchet noise at the end of a rev while in park and while cruising but not all the time.

-Car needs to be fully warm.
-Car has to have been driven for more than 5 mins and reach rpm above 2k.
-Car's cold start has no extra noise and not even the standard 2-3 second ticking either.

You can hear it while letting go of the gas and cruising with barrier echo. You can also hear it while decelerating at a light or stop sign. The noise stops completely after idling for about 5 mins and couple revs. id need to drive it above 2k rpm again for couple mins to make it come back.

Whats interesting is, I do not feel it in the car or while accelerating. If window is up and music playing, car is driving very smooth without issues.

DISA Valve was recently replaced but its the noise isnt near that. I thought it was the VANOS but I had someone rev and i put my hand on it and no extra vibration with the noise. Regardless, it could be the VANOS still, just seems unlikely.

I took a look inside the bell housing port and nothing from a quick glace. its spinning fine and when someone rev with the noise, it didn't look abnormal.

Noise "seems" like its inside the oil pan but it could be echoing from somewhere else.

I did an oil change today with Castrol 5w-40 and the noise didn't change frequency or volume. I did it at 5k. No plastic or noticeable metal in the oil, just standard black color.

Here is the clip.
https://jumpshare.com/s/q7nt2CE2RiM5GGQIhSgO